Print spooler not starting.

1. In my previous change I fixed a typo in the Java constant with
   intent action to launch the print dialog but failed to updated
   the print spooler manifest.

2. Removed dead code - the user id is no longer needed since the
   spooler is an app that runs per user. Every user has its spooler.
   This code was not referenced from anywhere.

3. Added a default icon to the print spooler.

4. Fixed a bug where if the print history is empty the UI goes
   to the all pritners activity.

bug:11059554

Change-Id: If74c23b418a8c67620ba14435ee7f3b2c4527099